PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-12:43:00
G01     65.2           31.5                3.5 +/-    1.41       5.9 +/-    1.41  0.080 / 0.150
G07     139.0          24.8                4.1 +/-    0.91       8.0 +/-    0.91  0.060 / 0.140
G11     51.1           29.1                4.1 +/-    2.81       7.3 +/-    2.81  0.120 / 0.510
G13     268.3          37.9                5.2 +/-    2.76       7.8 +/-    2.76  0.130 / 0.410
G15     299.5          15.6                0.6 +/-    3.08       1.6 +/-    3.08  0.360 / 0.920
G17     236.5          68.3                4.1 +/-    0.61       4.3 +/-    0.61  0.320 / 0.690
G18     45.4           15.8                3.8 +/-   22.07       9.2 +/-   22.07  0.170 / 0.200
G19     226.3          47.2                3.8 +/-    2.17       5.0 +/-    2.17  0.120 / 0.240
G28     13.4           60.6                3.5 +/-    2.04       4.0 +/-    2.04  0.160 / 0.720
G30     139.4          58.3                4.9 +/-    0.85       5.7 +/-    0.85  0.160 / 0.640