PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-21:42:50
G01     102.0          27.5               10.0 +/-    0.96      18.5 +/-    0.96  0.030 / 0.040
G07     115.5          49.6               11.1 +/-    0.47      14.1 +/-    0.47  0.030 / 0.040
G08     41.4           15.0                7.0 +/-    2.22      17.5 +/-    2.22  0.070 / 0.180
G09     174.3          10.5               10.0 +/-    2.44      27.5 +/-    2.44  0.080 / 0.160
G11     80.4           42.4               10.2 +/-    2.14      14.3 +/-    2.14  0.050 / 0.050
G13     305.4          32.0               10.2 +/-    1.56      17.1 +/-    1.56  0.050 / 0.050
G17     206.7          44.1               12.2 +/-    1.07      16.6 +/-    1.07  0.030 / 0.030
G18     72.2           23.7                9.0 +/-    1.20      18.0 +/-    1.20  0.040 / 0.030
G28     319.1          60.5                9.0 +/-    0.79      10.2 +/-    0.79  0.200 / 0.410
G30     50.9           79.7               10.7 +/-    0.75      10.9 +/-    0.75  0.190 / 0.320