PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-19:42:50
G02     219.7          62.8               12.9 +/-    1.18      14.3 +/-    1.18  0.040 / 0.060
G06     49.5           69.4               10.8 +/-    0.43      11.5 +/-    0.43  0.040 / 0.060
G12     320.4          42.1               10.3 +/-    1.05      14.5 +/-    1.05  0.050 / 0.070
G17     60.1           30.7                8.6 +/-    1.50      14.8 +/-    1.50  0.050 / 0.070
G19     40.9           48.8               10.0 +/-    0.87      12.9 +/-    0.87  0.040 / 0.100
G24     259.1          40.7               12.7 +/-    3.94      18.3 +/-    3.94  0.040 / 0.080
G28     125.1          10.8               13.0 +/-    2.59      35.5 +/-    2.59  0.050 / 0.040