PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-06:58:00
G01     115.2          19.0                7.2 +/-    1.99      16.2 +/-    1.99  0.030 / 0.040
G07     87.9           64.4                6.7 +/-    0.50       7.4 +/-    0.50  0.030 / 0.040
G08     44.4           30.7                2.8 +/-    0.46       4.9 +/-    0.46  0.030 / 0.040
G09     175.2          22.5                6.9 +/-    1.82      14.4 +/-    1.82  0.030 / 0.040
G11     106.3          42.3                6.5 +/-    1.40       9.1 +/-    1.40  0.070 / 0.140
G13     316.0          22.5                1.0 +/-    1.78       2.1 +/-    1.78  0.050 / 0.140
G17     201.7          25.7                7.0 +/-    2.18      13.6 +/-    2.18  0.070 / 0.220
G28     285.7          53.2                5.8 +/-    0.60       7.1 +/-    0.60  0.070 / 0.190
G30     344.5          69.0                5.1 +/-    0.98       5.4 +/-    0.98  0.040 / 0.070