PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-20:12:50
G01     69.7           32.8               15.7 +/-    0.66      25.9 +/-    0.66  0.110 / 0.310
G07     138.0          30.6               18.7 +/-    1.16      32.3 +/-    1.16  0.090 / 0.370
G11     53.7           31.0               13.5 +/-    0.71      23.2 +/-    0.71  0.030 / 0.040
G13     273.5          37.3               15.7 +/-    0.94      23.9 +/-    0.94  0.030 / 0.040
G15     302.0          15.3                8.7 +/-    2.72      21.5 +/-    2.72  0.040 / 0.080
G17     233.7          66.1               17.5 +/-    0.58      19.0 +/-    0.58  0.040 / 0.080
G18     48.6           18.0               11.8 +/-    0.60      27.1 +/-    0.60  0.060 / 0.130
G19     224.9          41.6               16.7 +/-    1.02      23.7 +/-    1.02  0.060 / 0.150
G28     21.8           59.0               14.5 +/-    0.20      16.7 +/-    0.20  0.030 / 0.050
G30     136.4          59.7               16.7 +/-    0.71      19.1 +/-    0.71  0.030 / 0.050