PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-14:58:00
G01     94.7           30.6               11.1 +/-    1.22      19.2 +/-    1.22  0.030 / 0.020
G07     121.7          49.0               11.4 +/-    0.34      14.5 +/-    0.34  0.030 / 0.020
G08     42.0           10.4                9.0 +/-    1.83      24.9 +/-    1.83  0.030 / 0.040
G11     72.9           40.9               10.3 +/-    0.87      14.7 +/-    0.87  0.040 / 0.050
G13     298.8          34.7                9.4 +/-    2.63      15.0 +/-    2.63  0.080 / 0.140
G17     211.8          49.3               12.4 +/-    0.60      15.8 +/-    0.60  0.090 / 0.090
G18     67.6           24.4               10.3 +/-    1.13      20.4 +/-    1.13  0.080 / 0.120
G19     213.2          20.9               11.5 +/-    2.26      24.8 +/-    2.26  0.080 / 0.130
G28     341.0          61.9                9.7 +/-    0.52      10.8 +/-    0.52  0.090 / 0.100
G30     84.9           79.0               11.7 +/-    0.65      11.9 +/-    0.65  0.080 / 0.100