PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-01:58:10
G01     70.6           32.9                3.4 +/-    1.23       5.6 +/-    1.23  0.040 / 0.050
G07     137.5          31.1                6.0 +/-    0.91      10.2 +/-    0.91  0.030 / 0.050
G11     55.3           32.6                3.0 +/-    1.34       5.0 +/-    1.34  0.040 / 0.030
G13     275.3          37.2                3.4 +/-    2.46       5.2 +/-    2.46  0.030 / 0.030
G15     301.7          15.8                1.5 +/-    0.84       3.7 +/-    0.84  0.070 / 0.070
G17     233.4          67.8                5.3 +/-    0.74       5.7 +/-    0.74  0.040 / 0.080
G19     224.4          42.6                5.5 +/-    1.84       7.6 +/-    1.84  0.070 / 0.120
G28     21.1           59.0                2.5 +/-    2.51       2.9 +/-    2.51  0.100 / 0.110
G30     135.3          56.9                6.8 +/-    0.28       8.0 +/-    0.28  0.060 / 0.090