PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-04:13:00
G10     257.3          31.8               14.3 +/-    1.96      24.2 +/-    1.96  0.110 / 0.370
G13     47.6           25.4                8.7 +/-    0.64      16.8 +/-    0.64  0.110 / 0.280
G15     72.8           55.2                8.7 +/-    0.56      10.4 +/-    0.56  0.040 / 0.050
G16     287.3          14.7               10.6 +/-    2.27      26.5 +/-    2.27  0.040 / 0.050
G20     299.5          65.2                8.5 +/-    0.61       9.2 +/-    0.61  0.180 / 0.330
G21     343.1          65.1                7.7 +/-    1.18       8.4 +/-    1.18  0.110 / 0.310
G26     259.5          12.4               12.9 +/-    3.98      34.1 +/-    3.98  0.070 / 0.080
G27     321.8          11.4               -1.1 +/-   32.74      -3.0 +/-   32.74  0.060 / 0.100
G29     166.9          42.2               10.8 +/-    1.02      15.1 +/-    1.02  0.070 / 0.150