PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-13:12:50
G01     115.0          19.7                7.7 +/-    1.44      17.1 +/-    1.44  0.070 / 0.060
G07     93.8           61.1                9.2 +/-    0.88      10.3 +/-    0.88  0.080 / 0.080
G08     44.4           31.0                7.1 +/-    1.08      12.2 +/-    1.08  0.060 / 0.080
G09     176.9          23.6                6.5 +/-    1.29      13.2 +/-    1.29  0.060 / 0.060
G11     102.0          42.1                8.1 +/-    0.81      11.5 +/-    0.81  0.040 / 0.040
G13     315.5          23.2                5.7 +/-    1.60      11.7 +/-    1.60  0.030 / 0.040
G17     202.7          25.3                6.6 +/-    1.76      12.8 +/-    1.76  0.080 / 0.160
G18     89.5           22.0                6.4 +/-    1.73      13.4 +/-    1.73  0.130 / 0.150
G28     289.7          54.9                6.7 +/-    2.60       8.0 +/-    2.60  0.110 / 0.140
G30     357.1          72.6                7.5 +/-    0.66       7.8 +/-    0.66  0.130 / 0.160