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               12.6 +/-    2.49      22.4 +/-    2.49  0.050 / 0.040
G13     50.7           27.9                6.2 +/-    2.47      11.4 +/-    2.47  0.050 / 0.050
G15     84.2           58.4                8.8 +/-    0.40      10.2 +/-    0.40  0.140 / 0.300
G16     290.9          15.7                9.0 +/-    1.28      22.0 +/-    1.28  0.130 / 0.340
G20     260.9          32.4               14.6 +/-    3.44      24.3 +/-    3.44  0.140 / 0.160
G21     336.4          61.8                8.7 +/-    0.78       9.7 +/-    0.78  0.130 / 0.310
G26     263.2          14.3               10.6 +/-    2.58      26.7 +/-    2.58  0.030 / 0.040
G29     166.1          47.4                9.7 +/-    0.70      12.6 +/-    0.70  0.030 / 0.040