PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-12:28:00
G08     265.2          14.9                5.6 +/-    1.17      14.0 +/-    1.17  0.040 / 0.040
G10     73.3           55.5                3.7 +/-    0.67       4.4 +/-    0.67  0.040 / 0.040
G11     308.2          19.4                3.0 +/-    0.95       6.7 +/-    0.95  0.070 / 0.100
G14     279.4          67.4                4.3 +/-    0.56       4.6 +/-    0.56  0.060 / 0.110
G18     308.5          36.5                4.4 +/-    1.24       6.8 +/-    1.24  0.100 / 0.230
G22     299.5          10.9               -0.1 +/-    1.81      -0.3 +/-    1.81  0.110 / 0.290
G27     226.1          10.9                4.2 +/-    6.26      11.4 +/-    6.26  0.170 / 0.250
G31     175.6          39.2                7.0 +/-    1.01      10.3 +/-    1.01  0.260 / 0.310
G32     2.8            69.4                4.1 +/-    0.34       4.4 +/-    0.34  0.030 / 0.030