PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-07:58:10
G02     211.0          52.3                5.9 +/-    0.80       7.3 +/-    0.80  0.060 / 0.070
G06     96.2           80.2                4.5 +/-    0.63       4.6 +/-    0.63  0.050 / 0.060
G12     315.5          28.9                1.3 +/-    1.57       2.3 +/-    1.57  0.090 / 0.130
G17     52.9           34.7                2.9 +/-    1.52       4.6 +/-    1.52  0.090 / 0.080
G19     26.9           55.6              -17.1 +/-    1.61     -20.2 +/-    1.61  0.030 / 0.020
G24     269.5          44.0                5.4 +/-    2.51       7.4 +/-    2.51  0.030 / 0.020
G28     116.7          21.0                5.0 +/-    1.30      10.8 +/-    1.30  0.080 / 0.200