PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-07:28:00
G08     313.3          17.2                5.4 +/-    2.95      12.7 +/-    2.95  0.030 / 0.040
G10     325.6          59.1                5.1 +/-    1.31       5.9 +/-    1.31  0.030 / 0.030
G14     215.4          27.2                5.4 +/-    2.12      10.1 +/-    2.12  0.040 / 0.040
G15     46.2           13.0                2.2 +/-    1.94       5.8 +/-    1.94  0.040 / 0.040
G20     29.2           61.9                5.5 +/-    1.69       6.1 +/-    1.69  0.070 / 0.070
G21     129.5          59.8                7.6 +/-    0.39       8.6 +/-    0.39  0.060 / 0.070
G24     78.3           29.7                5.4 +/-    0.84       9.6 +/-    0.84  0.130 / 0.200
G27     282.7          37.4                6.0 +/-    1.57       9.1 +/-    1.57  0.110 / 0.230
G32     219.5          43.1                8.6 +/-    1.15      11.9 +/-    1.15  0.080 / 0.110