PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-14:27:50
G01     220.3          10.9               11.0 +/-    1.85      30.2 +/-    1.85  0.090 / 0.350
G03     252.1          70.9               10.9 +/-    0.95      11.5 +/-    0.95  0.090 / 0.310
G09     299.3          12.9                8.3 +/-    4.10      21.7 +/-    4.10  0.060 / 0.060
G14     92.9           22.0                8.4 +/-    2.00      17.7 +/-    2.00  0.050 / 0.080
G16     135.0          54.1               11.6 +/-    0.43      14.0 +/-    0.43  0.040 / 0.060
G22     192.0          58.9               11.8 +/-    1.36      13.5 +/-    1.36  0.040 / 0.060
G23     317.5          48.0                7.8 +/-    0.80      10.1 +/-    0.80  0.030 / 0.050
G26     77.8           52.9                8.9 +/-    0.27      10.9 +/-    0.27  0.030 / 0.040
G31     49.6           23.0                6.3 +/-    0.35      12.9 +/-    0.35  0.150 / 0.360