PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-20:43:00
G10     253.1          30.4               11.7 +/-    2.31      20.3 +/-    2.31  0.040 / 0.050
G13     50.5           27.0                6.1 +/-    2.59      11.4 +/-    2.59  0.040 / 0.040
G15     81.8           57.4                9.2 +/-    0.65      10.8 +/-    0.65  0.070 / 0.190
G16     292.6          15.6                7.1 +/-    2.57      17.4 +/-    2.57  0.120 / 0.200
G20     274.8          53.1               10.1 +/-    3.42      12.2 +/-    3.42  0.030 / 0.040
G21     336.9          61.4                9.7 +/-    0.64      10.9 +/-    0.64  0.030 / 0.040
G26     265.5          14.3               10.0 +/-    2.59      25.3 +/-    2.59  0.090 / 0.370
G29     164.4          47.2               11.4 +/-    0.67      14.8 +/-    0.67  0.100 / 0.450