PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-19:42:40
G01     306.8          33.3               10.6 +/-    2.20      17.4 +/-    2.20  0.080 / 0.150
G10     106.3          40.4               15.3 +/-    0.67      22.1 +/-    0.67  0.090 / 0.140
G11     282.5          28.0               11.7 +/-    0.72      21.4 +/-    0.72  0.020 / 0.030
G14     357.5          66.7               12.1 +/-    0.36      13.0 +/-    0.36  0.030 / 0.040
G18     117.9          12.5               14.5 +/-    1.70      38.4 +/-    1.70  0.060 / 0.110
G22     309.7          25.7               10.9 +/-    1.46      21.0 +/-    1.46  0.070 / 0.100
G25     81.7           16.7               13.6 +/-    1.38      32.5 +/-    1.38  0.030 / 0.040
G31     169.1          64.4               16.6 +/-    0.61      18.2 +/-    0.61  0.030 / 0.040
G32     35.8           52.7               12.3 +/-    1.24      15.0 +/-    1.24  0.030 / 0.040