PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-06:57:40
G01     231.4          23.3                5.6 +/-    2.79      11.4 +/-    2.79  0.170 / 0.200
G03     303.8          62.3                2.6 +/-    0.63       2.9 +/-    0.63  0.200 / 0.250
G14     77.9           30.1                3.7 +/-    1.64       6.5 +/-    1.64  0.090 / 0.110
G16     152.6          35.9                5.1 +/-    1.80       8.0 +/-    1.80  0.070 / 0.110
G18     207.6          12.5                3.2 +/-    4.57       8.5 +/-    4.57  0.030 / 0.030
G22     246.8          75.1                4.4 +/-    0.44       4.6 +/-    0.44  0.040 / 0.030
G26     113.1          51.2                4.8 +/-    0.72       6.0 +/-    0.72  0.120 / 0.490
G31     43.1           38.5                2.9 +/-    1.27       4.4 +/-    1.27  0.210 / 0.420
G32     91.8           12.4                3.8 +/-    2.04       9.9 +/-    2.04  0.090 / 0.220