PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-13:58:00
G01     104.3          26.9               10.7 +/-    0.80      20.1 +/-    0.80  0.030 / 0.030
G07     110.9          56.2                8.9 +/-    0.75      10.5 +/-    0.75  0.030 / 0.030
G08     41.6           17.3                7.2 +/-    1.10      16.8 +/-    1.10  0.070 / 0.150
G11     84.3           42.5                9.5 +/-    0.81      13.2 +/-    0.81  0.070 / 0.130
G13     307.3          30.4                7.4 +/-    1.27      12.9 +/-    1.27  0.040 / 0.070
G17     206.9          40.8               10.0 +/-    0.85      14.3 +/-    0.85  0.040 / 0.090
G18     77.1           24.5                8.8 +/-    1.19      17.3 +/-    1.19  0.040 / 0.060
G19     210.3          12.8               -4.0 +/-    5.83     -10.6 +/-    5.83  0.040 / 0.060
G28     323.0          61.3                7.4 +/-    1.27       8.4 +/-    1.27  0.040 / 0.040
G30     31.1           79.2                7.9 +/-    0.50       8.1 +/-    0.50  0.030 / 0.040