PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-10:27:50
G01     275.3          42.2                4.0 +/-    0.91       5.6 +/-    0.91  0.050 / 0.060
G03     315.7          30.2                4.2 +/-    1.51       7.4 +/-    1.51  0.050 / 0.050
G10     127.2          18.9                6.0 +/-    0.68      13.7 +/-    0.68  0.140 / 0.180
G11     253.3          21.2                5.6 +/-    1.81      12.0 +/-    1.81  0.110 / 0.240
G14     39.2           52.1                2.7 +/-    0.81       3.3 +/-    0.81  0.040 / 0.070
G18     235.8          41.4                2.9 +/-    1.39       4.2 +/-    1.39  0.040 / 0.080
G22     315.0          51.8                3.8 +/-    0.83       4.7 +/-    0.83  0.050 / 0.080
G25     56.0           17.3                1.8 +/-    1.15       4.2 +/-    1.15  0.050 / 0.070
G31     68.6           77.1                3.7 +/-    0.83       3.8 +/-    0.83  0.130 / 0.310
G32     57.8           38.5                1.9 +/-    0.64       2.9 +/-    0.64  0.130 / 0.260