PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-05:27:40
G01     93.2           31.1                5.0 +/-    0.45       8.6 +/-    0.45  0.040 / 0.050
G07     123.0          47.2                5.3 +/-    0.59       6.9 +/-    0.59  0.040 / 0.050
G11     72.6           40.6                4.3 +/-    0.45       6.2 +/-    0.45  0.030 / 0.040
G13     298.7          34.2                4.8 +/-    1.45       7.7 +/-    1.45  0.040 / 0.060
G17     212.6          52.0                8.1 +/-    1.17      10.0 +/-    1.17  0.040 / 0.040
G19     213.4          25.8                7.3 +/-    3.39      14.0 +/-    3.39  0.050 / 0.050
G28     345.5          61.8                2.9 +/-    0.64       3.3 +/-    0.64  0.070 / 0.110
G30     97.2           76.1                6.5 +/-    0.91       6.6 +/-    0.91  0.080 / 0.110