PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-01:43:00
G01     75.0           33.3                3.0 +/-    1.04       4.9 +/-    1.04  0.030 / 0.040
G07     135.3          34.4                6.7 +/-    1.45      10.7 +/-    1.45  0.030 / 0.050
G11     58.3           35.0                4.8 +/-    0.93       7.5 +/-    0.93  0.050 / 0.040
G13     279.9          37.4                5.5 +/-    1.90       8.4 +/-    1.90  0.050 / 0.030
G15     304.9          15.0                1.7 +/-    1.68       4.2 +/-    1.68  0.060 / 0.100
G17     227.7          64.4                6.4 +/-    1.13       7.0 +/-    1.13  0.070 / 0.090
G19     221.8          39.2                6.6 +/-    1.61       9.7 +/-    1.61  0.040 / 0.080
G28     14.6           59.8                3.7 +/-    0.63       4.2 +/-    0.63  0.060 / 0.070
G30     131.5          60.3                8.2 +/-    0.67       9.3 +/-    0.67  0.070 / 0.090