PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-01:27:50
G01     67.5           32.5                4.2 +/-    1.55       7.0 +/-    1.55  0.040 / 0.040
G07     139.1          28.7                5.8 +/-    1.26      10.4 +/-    1.26  0.040 / 0.060
G11     53.5           31.1                3.8 +/-    0.92       6.5 +/-    0.92  0.040 / 0.090
G13     271.8          36.8                5.3 +/-    2.31       8.2 +/-    2.31  0.050 / 0.050
G15     299.3          16.2                4.7 +/-    1.93      11.4 +/-    1.93  0.030 / 0.030
G17     238.3          69.7                5.3 +/-    0.45       5.7 +/-    0.45  0.030 / 0.030
G19     226.6          45.0                6.9 +/-    1.91       9.3 +/-    1.91  0.050 / 0.090
G28     25.7           58.3                6.8 +/-    1.06       7.8 +/-    1.06  0.100 / 0.120
G30     137.8          54.6                5.4 +/-    0.32       6.4 +/-    0.32  0.070 / 0.100