PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-19:27:50
G01     103.8          26.6               13.4 +/-    1.24      25.3 +/-    1.24  0.040 / 0.050
G07     113.9          49.9               13.8 +/-    0.60      17.4 +/-    0.60  0.030 / 0.050
G08     41.5           17.3               10.3 +/-    2.73      24.3 +/-    2.73  0.060 / 0.150
G09     175.0          12.4               16.7 +/-    3.51      44.0 +/-    3.51  0.070 / 0.140
G11     83.2           42.8               13.3 +/-    0.77      18.5 +/-    0.77  0.080 / 0.130
G13     306.9          31.1               11.1 +/-    1.45      19.1 +/-    1.45  0.080 / 0.160
G17     206.1          41.3               14.1 +/-    0.92      20.0 +/-    0.92  0.270 / 0.380
G18     74.9           23.9               11.8 +/-    1.67      23.7 +/-    1.67  0.220 / 0.380
G28     314.4          59.9               10.4 +/-    0.91      11.8 +/-    0.91  0.030 / 0.020
G30     46.5           79.2               11.9 +/-    0.66      12.1 +/-    0.66  0.030 / 0.020