PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-00:27:50
G05     50.2           13.1                6.4 +/-    2.47      16.7 +/-    2.47  0.210 / 0.180
G10     238.6          16.8               13.6 +/-    2.06      32.3 +/-    2.06  0.090 / 0.240
G13     69.8           34.9                8.9 +/-    1.14      14.1 +/-    1.14  0.050 / 0.070
G15     116.1          54.7               11.2 +/-    0.82      13.4 +/-    0.82  0.070 / 0.070
G16     311.8          13.0                7.8 +/-    3.50      20.4 +/-    3.50  0.070 / 0.100
G20     252.0          39.8               12.6 +/-    1.71      18.4 +/-    1.71  0.090 / 0.120
G21     317.2          49.2                8.6 +/-    1.37      10.9 +/-    1.37  0.030 / 0.040
G26     284.4          19.5                8.7 +/-    2.17      19.4 +/-    2.17  0.030 / 0.030
G29     155.3          66.4               11.1 +/-    1.00      12.0 +/-    1.00  0.140 / 0.150