PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-04:42:40
G01     109.2          24.4                4.0 +/-    0.78       8.0 +/-    0.78  0.040 / 0.060
G07     103.4          59.4                6.0 +/-    0.38       6.8 +/-    0.38  0.040 / 0.060
G08     42.2           22.1                3.1 +/-    1.06       6.5 +/-    1.06  0.030 / 0.030
G09     175.7          16.2                4.9 +/-    1.92      11.8 +/-    1.92  0.030 / 0.040
G11     93.1           42.2                5.9 +/-    0.48       8.3 +/-    0.48  0.050 / 0.090
G13     312.2          26.1                4.9 +/-    1.67       9.3 +/-    1.67  0.040 / 0.080
G17     204.8          36.4                7.3 +/-    1.01      11.2 +/-    1.01  0.120 / 0.160
G19     208.4          12.0                4.3 +/-    5.69      11.5 +/-    5.69  0.140 / 0.220
G28     314.9          60.7                4.7 +/-    0.60       5.3 +/-    0.60  0.070 / 0.140
G30     22.6           77.1                5.0 +/-    0.68       5.1 +/-    0.68  0.070 / 0.130