PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-23:12:30
G02     203.2          37.0               14.9 +/-    0.79      22.8 +/-    0.79  0.210 / 0.190
G06     156.7          70.7               12.7 +/-    0.55      13.4 +/-    0.55  0.210 / 0.300
G12     308.3          16.2                8.2 +/-    3.58      19.8 +/-    3.58  0.080 / 0.110
G17     33.0           51.7               11.0 +/-    1.42      13.6 +/-    1.42  0.080 / 0.110
G19     1.5            65.0               10.1 +/-    0.58      11.0 +/-    0.58  0.040 / 0.030
G24     296.6          38.7               10.7 +/-    1.59      16.0 +/-    1.59  0.040 / 0.030
G28     103.9          30.1               12.2 +/-    1.15      21.3 +/-    1.15  0.100 / 0.090