PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-14:28:10
G01     123.6          14.4               10.5 +/-    2.45      26.4 +/-    2.45  0.040 / 0.050
G07     65.3           68.8                8.7 +/-    0.72       9.3 +/-    0.72  0.040 / 0.050
G08     47.6           36.2                7.8 +/-    0.85      12.1 +/-    0.85  0.210 / 0.350
G09     176.8          30.4                8.7 +/-    2.70      15.2 +/-    2.70  0.160 / 0.370
G11     113.2          37.6               10.2 +/-    1.06      15.4 +/-    1.06  0.050 / 0.070
G13     319.8          15.2                6.9 +/-    2.66      17.0 +/-    2.66  0.040 / 0.060
G17     200.8          18.5                9.2 +/-    1.27      21.1 +/-    1.27  0.030 / 0.040
G18     99.6           18.6                8.8 +/-    1.84      20.0 +/-    1.84  0.030 / 0.040
G28     283.1          55.0                9.8 +/-    1.44      11.7 +/-    1.44  0.050 / 0.120
G30     337.6          63.7                8.5 +/-    0.46       9.3 +/-    0.46  0.060 / 0.110