PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-01:28:00
G10     265.1          38.2               11.6 +/-    1.37      17.3 +/-    1.37  0.220 / 0.250
G13     42.5           18.9                9.2 +/-    3.27      20.8 +/-    3.27  0.170 / 0.220
G15     60.7           49.5               11.0 +/-    0.98      13.9 +/-    0.98  0.070 / 0.080
G16     282.3          12.9                7.8 +/-    1.07      20.3 +/-    1.07  0.060 / 0.090
G20     293.6          59.1               11.0 +/-    1.21      12.6 +/-    1.21  0.040 / 0.040
G21     357.8          70.2               11.3 +/-    0.45      11.9 +/-    0.45  0.040 / 0.040
G24     122.6          13.0               11.9 +/-    1.78      31.1 +/-    1.78  0.090 / 0.230
G27     320.0          16.4                8.6 +/-    2.80      20.6 +/-    2.80  0.240 / 0.540
G29     166.2          32.3               11.8 +/-    1.31      19.7 +/-    1.31  0.030 / 0.070