PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-01:58:00
G10     247.7          24.2               12.1 +/-    0.87      24.2 +/-    0.87  0.120 / 0.350
G13     56.9           31.7               10.0 +/-    1.30      17.0 +/-    1.30  0.120 / 0.310
G15     96.2           58.4               11.5 +/-    0.73      13.2 +/-    0.73  0.040 / 0.050
G16     298.0          15.9                6.8 +/-    1.69      16.4 +/-    1.69  0.040 / 0.050
G20     263.2          45.5               11.5 +/-    3.02      15.4 +/-    3.02  0.060 / 0.140
G21     328.6          57.2               10.4 +/-    0.59      12.1 +/-    0.59  0.110 / 0.120
G26     269.6          17.0               10.5 +/-    0.97      24.8 +/-    0.97  0.040 / 0.040
G29     164.3          54.9               11.5 +/-    0.48      13.7 +/-    0.48  0.030 / 0.040