PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-19:57:30
G10     253.2          30.4               14.8 +/-    2.45      25.8 +/-    2.45  0.040 / 0.050
G13     50.4           27.0                9.8 +/-    3.59      18.3 +/-    3.59  0.040 / 0.040
G15     81.5           57.3               13.8 +/-    0.93      16.0 +/-    0.93  0.070 / 0.190
G16     292.5          15.7               11.2 +/-    2.63      27.4 +/-    2.63  0.070 / 0.220
G20     275.1          53.4               13.7 +/-    3.55      16.7 +/-    3.55  0.030 / 0.040
G21     337.0          61.4               13.3 +/-    0.62      14.9 +/-    0.62  0.030 / 0.040
G26     265.4          14.3               13.4 +/-    2.23      34.0 +/-    2.23  0.100 / 0.410
G29     164.5          47.4               14.8 +/-    0.76      19.3 +/-    0.76  0.110 / 0.450