PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-19:57:40
G01     64.6           31.9               10.7 +/-    0.63      18.1 +/-    0.63  0.090 / 0.390
G07     140.4          26.5               14.7 +/-    0.83      27.8 +/-    0.83  0.090 / 0.390
G11     50.8           27.7                8.8 +/-    1.00      16.2 +/-    1.00  0.040 / 0.050
G13     267.8          36.5               14.0 +/-    2.08      21.6 +/-    2.08  0.040 / 0.050
G15     298.1          15.9               10.2 +/-    2.10      24.9 +/-    2.10  0.040 / 0.060
G17     242.3          70.2               12.8 +/-    0.40      13.5 +/-    0.40  0.040 / 0.050
G18     45.3           15.6                9.2 +/-    1.18      22.5 +/-    1.18  0.070 / 0.150
G19     228.6          45.5               15.2 +/-    1.13      20.3 +/-    1.13  0.120 / 0.160
G28     29.4           57.8               10.1 +/-    0.82      11.7 +/-    0.82  0.070 / 0.110
G30     140.4          55.5               13.2 +/-    1.29      15.6 +/-    1.29  0.060 / 0.120