PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-02:42:40
G01     39.8           14.0                1.6 +/-    1.41       4.2 +/-    1.41  0.040 / 0.080
G02     198.7          12.8                3.8 +/-    2.78      10.1 +/-    2.78  0.040 / 0.080
G06     176.0          41.1                7.0 +/-    0.91      10.0 +/-    0.91  0.030 / 0.040
G13     235.8          19.9                5.0 +/-    1.23      11.0 +/-    1.23  0.030 / 0.040
G15     267.3          11.3                4.2 +/-    3.09      11.4 +/-    3.09  0.070 / 0.150
G17     3.5            69.0                4.9 +/-    0.35       5.2 +/-    0.35  0.060 / 0.130
G19     288.6          70.5                4.0 +/-    0.53       4.2 +/-    0.53  0.120 / 0.250
G24     315.7          21.2                2.8 +/-    2.70       6.0 +/-    2.70  0.090 / 0.260
G28     76.5           44.7                3.6 +/-    0.70       4.9 +/-    0.70  0.090 / 0.340
G30     154.2          20.7                5.2 +/-    1.58      11.2 +/-    1.58  0.070 / 0.390