PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-04:42:40
G01     306.4          33.6                2.8 +/-    1.31       4.6 +/-    1.31  0.050 / 0.030
G10     106.1          40.8                5.5 +/-    0.83       7.9 +/-    0.83  0.050 / 0.030
G11     278.9          29.7                5.7 +/-    0.72      10.0 +/-    0.72  0.080 / 0.120
G14     2.2            66.0                2.0 +/-    0.88       2.2 +/-    0.88  0.070 / 0.100
G18     117.1          15.2                4.7 +/-    2.12      11.7 +/-    2.12  0.040 / 0.050
G22     309.7          26.5                3.8 +/-    2.04       7.1 +/-    2.04  0.050 / 0.050
G25     77.2           16.0                3.9 +/-    2.35       9.4 +/-    2.35  0.180 / 0.150
G31     167.7          65.0                4.9 +/-    1.03       5.4 +/-    1.03  0.080 / 0.130
G32     34.9           53.3                3.8 +/-    1.54       4.6 +/-    1.54  0.030 / 0.050