PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-21:57:40
G10     247.3          25.5               13.9 +/-    1.25      26.9 +/-    1.25  0.030 / 0.040
G13     56.6           30.8               10.0 +/-    1.79      17.2 +/-    1.79  0.040 / 0.040
G15     94.5           58.0               10.6 +/-    1.47      12.2 +/-    1.47  0.090 / 0.160
G16     299.7          15.6                8.0 +/-    2.53      19.6 +/-    2.53  0.050 / 0.140
G20     265.2          48.3               11.5 +/-    2.78      14.8 +/-    2.78  0.030 / 0.040
G21     328.8          56.7               10.4 +/-    0.62      12.2 +/-    0.62  0.030 / 0.040
G26     272.0          16.9               12.4 +/-    2.00      29.5 +/-    2.00  0.180 / 0.490
G29     162.0          54.4               11.8 +/-    0.63      14.1 +/-    0.63  0.120 / 0.340