PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-12:43:10
G01     66.6           32.1                4.1 +/-    1.18       6.9 +/-    1.18  0.040 / 0.100
G07     139.1          25.5                4.5 +/-    0.93       8.7 +/-    0.93  0.040 / 0.110
G11     50.8           26.2                3.9 +/-    1.67       7.5 +/-    1.67  0.030 / 0.040
G13     272.8          36.3                4.3 +/-    1.20       6.6 +/-    1.20  0.030 / 0.040
G15     301.1          15.4                0.2 +/-    1.14       0.5 +/-    1.14  0.120 / 0.380
G17     243.8          74.7                4.0 +/-    0.50       4.1 +/-    0.50  0.110 / 0.390
G19     227.3          47.2                4.6 +/-    1.38       6.1 +/-    1.38  0.030 / 0.040
G28     26.2           58.2                2.8 +/-    0.35       3.3 +/-    0.35  0.030 / 0.040
G30     138.2          60.0                4.1 +/-    0.59       4.6 +/-    0.59  0.050 / 0.070