PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-23:58:00
G10     253.4          29.1               12.3 +/-    2.49      22.0 +/-    2.49  0.150 / 0.590
G13     50.7           27.9                8.0 +/-    1.12      14.6 +/-    1.12  0.150 / 0.520
G15     84.2           58.4               10.3 +/-    0.47      11.9 +/-    0.47  0.080 / 0.120
G16     290.9          15.7                9.1 +/-    2.40      22.2 +/-    2.40  0.070 / 0.120
G20     260.9          32.4                8.6 +/-    0.77      14.4 +/-    0.77  0.040 / 0.060
G21     336.4          61.8                9.6 +/-    0.76      10.7 +/-    0.76  0.040 / 0.050
G26     263.2          14.3               11.2 +/-    2.00      28.2 +/-    2.00  0.030 / 0.060
G29     166.1          47.4               11.1 +/-    0.91      14.4 +/-    0.91  0.030 / 0.050