PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-14:42:30
G02     200.9          20.1               16.5 +/-    1.25      36.3 +/-    1.25  0.180 / 0.250
G06     171.2          54.5               15.6 +/-    0.94      18.7 +/-    0.94  0.160 / 0.250
G13     228.4          12.7               16.7 +/-    3.20      43.9 +/-    3.20  0.080 / 0.160
G17     26.5           57.0               13.1 +/-    0.34      15.3 +/-    0.34  0.090 / 0.150
G19     333.5          70.9               14.0 +/-    0.51      14.7 +/-    0.51  0.040 / 0.050
G24     310.6          28.9               12.5 +/-    1.26      22.3 +/-    1.26  0.040 / 0.050
G28     89.6           38.8               12.7 +/-    0.33      18.8 +/-    0.33  0.020 / 0.040
G30     157.7          15.1               15.1 +/-    1.80      37.4 +/-    1.80  0.020 / 0.040