PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-05:28:10
G03     216.6          58.1                6.4 +/-    1.49       7.4 +/-    1.49  0.030 / 0.040
G07     258.3          17.4                6.0 +/-    2.02      14.1 +/-    2.02  0.040 / 0.040
G09     311.6          30.8                4.7 +/-    2.03       8.0 +/-    2.03  0.120 / 0.210
G16     102.0          66.2                7.2 +/-    1.04       7.8 +/-    1.04  0.170 / 0.160
G22     188.7          41.7                7.9 +/-    0.91      11.2 +/-    0.91  0.060 / 0.060
G23     329.0          59.0                3.8 +/-    0.72       4.4 +/-    0.72  0.050 / 0.060
G26     55.3           46.4                6.7 +/-    0.66       8.8 +/-    0.66  0.080 / 0.140
G27     132.1          11.8                6.6 +/-    2.32      17.8 +/-    2.32  0.080 / 0.130
G31     58.9           12.3                2.9 +/-    2.22       7.6 +/-    2.22  0.040 / 0.030