PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-01:27:30
G10     293.1          50.3                8.8 +/-    2.96      11.0 +/-    2.96  0.060 / 0.080
G15     47.2           33.4                5.7 +/-    1.21       9.3 +/-    1.21  0.070 / 0.100
G20     303.8          55.2               12.3 +/-    0.64      14.7 +/-    0.64  0.050 / 0.040
G21     82.5           76.5                8.4 +/-    0.87       8.6 +/-    0.87  0.040 / 0.040
G24     99.3           25.2               10.4 +/-    1.26      20.2 +/-    1.26  0.070 / 0.130
G27     303.7          32.7                7.5 +/-    1.27      12.4 +/-    1.27  0.090 / 0.120
G29     168.7          11.2               13.4 +/-    2.30      36.5 +/-    2.30  0.120 / 0.080
G32     209.0          30.8               12.3 +/-    1.28      21.2 +/-    1.28  0.060 / 0.130