PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-03:12:50
G01     103.2          27.3               12.6 +/-    0.52      23.5 +/-    0.52  0.040 / 0.050
G07     113.6          52.7                8.5 +/-    0.67      10.4 +/-    0.67  0.040 / 0.040
G08     41.4           14.8                4.2 +/-    1.62      10.5 +/-    1.62  0.040 / 0.060
G11     81.3           42.2                8.0 +/-    0.87      11.3 +/-    0.87  0.050 / 0.070
G13     306.2          31.4                4.6 +/-    1.66       7.8 +/-    1.66  0.060 / 0.170
G17     206.2          44.4                9.7 +/-    1.79      13.2 +/-    1.79  0.060 / 0.150
G18     72.3           23.4                6.6 +/-    0.61      13.4 +/-    0.61  0.060 / 0.130
G19     210.1          14.8               -0.9 +/-    9.02      -2.2 +/-    9.02  0.060 / 0.140
G28     320.4          60.8                6.0 +/-    1.19       6.8 +/-    1.19  0.030 / 0.030
G30     35.2           79.7                6.9 +/-    0.67       7.0 +/-    0.67  0.030 / 0.030