PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-08:42:40
G08     269.0          19.0                2.1 +/-    7.67       4.7 +/-    7.67  0.130 / 0.250
G10     59.6           58.0                3.4 +/-    0.85       3.9 +/-    0.85  0.160 / 0.270
G11     312.3          16.7                4.0 +/-    3.82       9.6 +/-    3.82  0.180 / 0.310
G18     312.8          32.2               -1.7 +/-    7.84      -2.9 +/-    7.84  0.140 / 0.270
G20     93.9           37.5               -2.1 +/-    9.05      -3.2 +/-    9.05  0.030 / 0.030
G21     154.4          15.9               -0.4 +/-   11.77      -1.1 +/-   11.77  0.030 / 0.030
G24     40.1           10.3               -1.4 +/-    8.44      -3.8 +/-    8.44  0.140 / 0.250
G27     234.4          17.6                3.6 +/-   11.01       8.5 +/-   11.01  0.100 / 0.330
G31     178.8          28.3               -0.1 +/-   10.41      -0.1 +/-   10.41  0.120 / 0.340
G32     314.2          74.7               -4.5 +/-    8.80      -4.7 +/-    8.80  0.090 / 0.230