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               13.7 +/-    2.02      23.1 +/-    2.02  0.120 / 0.450
G13     47.6           25.4                8.8 +/-    2.07      17.0 +/-    2.07  0.120 / 0.310
G15     72.8           55.2                8.7 +/-    0.74      10.3 +/-    0.74  0.040 / 0.030
G16     287.3          14.7               10.5 +/-    1.50      26.4 +/-    1.50  0.030 / 0.040
G20     299.5          65.2                9.0 +/-    0.65       9.9 +/-    0.65  0.310 / 0.250
G21     343.1          65.1                9.5 +/-    0.42      10.4 +/-    0.42  0.400 / 0.420
G26     259.5          12.4               13.7 +/-    2.98      36.3 +/-    2.98  0.130 / 0.260
G27     321.8          11.4               -5.3 +/-   30.35     -14.2 +/-   30.35  0.180 / 0.250
G29     166.9          42.2                9.2 +/-    0.98      12.9 +/-    0.98  0.030 / 0.030