PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-21:27:40
G10     243.4          20.4               13.9 +/-    1.02      30.3 +/-    1.02  0.040 / 0.060
G13     62.5           33.9               10.2 +/-    0.90      16.5 +/-    0.90  0.040 / 0.070
G15     112.6          57.9               10.8 +/-    0.57      12.5 +/-    0.57  0.180 / 0.600
G16     302.8          15.9                6.9 +/-    3.09      16.7 +/-    3.09  0.110 / 0.520
G20     246.5          8.6                 4.4 +/-    1.55      12.6 +/-    1.55  0.070 / 0.160
G21     322.4          53.1               11.7 +/-    1.40      14.3 +/-    1.40  0.070 / 0.130
G26     274.9          18.9               10.3 +/-    1.67      23.3 +/-    1.67  0.030 / 0.050
G29     162.3          61.6               12.4 +/-    1.06      13.8 +/-    1.06  0.040 / 0.040