PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-03:12:50
G01     40.3           14.9                2.4 +/-    1.67       5.9 +/-    1.67  0.050 / 0.080
G02     198.7          11.7                3.7 +/-    6.32       9.8 +/-    6.32  0.060 / 0.070
G06     176.5          39.5                7.7 +/-    0.96      11.3 +/-    0.96  0.030 / 0.040
G13     236.8          20.7                5.7 +/-    1.46      12.3 +/-    1.46  0.030 / 0.040
G15     268.3          11.8                4.7 +/-    1.76      12.5 +/-    1.76  0.090 / 0.080
G17     2.0            69.7                4.2 +/-    0.46       4.4 +/-    0.46  0.080 / 0.060
G19     285.0          70.2                4.4 +/-    0.39       4.6 +/-    0.39  0.100 / 0.270
G24     316.2          20.1                3.1 +/-    2.25       6.9 +/-    2.25  0.090 / 0.190
G28     74.9           45.3                4.0 +/-    0.56       5.3 +/-    0.56  0.080 / 0.200