PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-01:12:50
G01     98.3           29.5                5.7 +/-    0.54      10.1 +/-    0.54  0.030 / 0.060
G07     118.1          51.8                6.6 +/-    0.51       8.1 +/-    0.51  0.040 / 0.070
G08     42.0           15.1                3.5 +/-    2.15       8.6 +/-    2.15  0.030 / 0.050
G11     80.6           43.0                7.1 +/-    0.63       9.9 +/-    0.63  0.040 / 0.050
G13     302.9          32.6                6.8 +/-    1.10      11.2 +/-    1.10  0.120 / 0.280
G17     210.4          45.2                9.2 +/-    1.52      12.4 +/-    1.52  0.120 / 0.210
G19     211.7          21.0                7.6 +/-    1.03      16.3 +/-    1.03  0.020 / 0.050
G28     336.4          61.9                6.2 +/-    0.66       7.0 +/-    0.66  0.030 / 0.050
G30     87.8           76.2                6.7 +/-    0.39       6.9 +/-    0.39  0.030 / 0.080